介孔复合微纳结构CaTi2O5的可控制备及光催化性能研究

项目名称： 介孔复合微纳结构CaTi2O5的可控制备及光催化性能研究

项目编号： No.51502119

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 一般工业技术

项目作者： 董伟霞

作者单位： 景德镇陶瓷大学

项目金额： 21万元

中文摘要： 光催化降解是一项新兴的、具有工业应用前途的废水处理技术，可控尺寸和形貌的纳米/微米材料因具有独特的微纳结构、维度尺寸和高比表面积，在光催化领域具有广阔的应用前景而备受关注。针对微纳结构的可控合成难和传统纳米粉末光催化剂易团聚等问题，本项目提出介孔复合微纳结构CaTi2O5作为新型光催化剂，采用简易的溶剂热法控制CaTi2O5的介孔微纳结构。研究CaTi2O5不同形貌与光催化性能的关系，形成一种效率更高的光催化材料的制备技术。并用CaTi2O5与CaTi2O4(OH)2、C3N4复合，使光催化剂吸收的光波波长红移至可见光范围，提高光能利用率和光催化活性，使其具有更广泛的实际应用前景。并对其降解染料的光催化反应氧原子交换机理进行探讨，建立光氧化反应机理模型。为今后制备新型光催化剂和调控光催化反应提供重要的科学依据。

中文关键词： CaTi2O5介孔复合微纳结构；可控制备；光催化性能

英文摘要： The photocatalytic degradation is a new wastewater treatment technology with industrial application prospects, and nanomaterials with the controlled size and morphology have attracted considerable attention due to its unique micro-nano structure, dimension and high surface and their potential applicationgs in catalyst control techniques. For the shortcomings of catalyst preparation process complex, high cost and reclamation difficulty, this project would put forward CaTi2O5 mesoporous and micro-nano structure as a novel photocatalyst, and the controllable preparation of CaTi2O5 micro-nano structure by solvothermal method. Relationships between the different morphologies and photocatalytic properties of CaTi2O5 would be studied, forming a kind of high efficient preparation technology of photocatalytic materials. Using CaTi2O5 and CaTi2O4(OH)2/C3N4 composite extended the visible light range of CaTi2O5 to improve light energy utilization efficiency and photocatalytic properties, so that it has more extensive practical application prospect. And the photocatalytic reaction of oxygen atomic on the degradation of dye exchange mechanism is discussed, and the model of the reaction mechanism of photocatalytic oxidation will be set up. It will provide the important scientific basis for the preparation of new photocatalyst and regulation of the photocatalytic reaction.

英文关键词： CaTi2O5 mesoporous complex and micro-nano structure;controllable preparation;photocatalytic properties